ASK MATHESON: How gases are more effectively and safely controlled w i t h our equipment.
New Products
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S p e l l s a n d i n c a n t a t i o n s will get y o u n o w h e r e . B u t M a t h e s o n ' s f r e e n e w c a t a l o g * s h o w s e q u i p m e n t w h i c h e n a b l e s y o u to utilize gases m o r e e f f e c t i v e l y and safely. We m a t c h o u r e q u i p m e n t t o i n d i v i d u a l gases. You'll f i n d o u r e q u i p m e n t useful for pilot plant and industrial a p p l i c a t i o n s as w e l l as lab installations. T h e M a t h e s o n Line i n c l u d e s h u n d r e d s of v a l v e s , r e g u l a t o r s , f l o w m e t e r s , filters, leak d e t e c t o r s plus m a n y m o r e i t e m s for gas systems. H e r e are t w o e x a m p l e s : M o d e l 8 two stage regulator g i v e s m a x i m u m c o n t r o l and l o n g , trouble-free service.
Model 5205X, a matrix of Spiraltron electron multipliers, is an area-sensitive detector for charged particles, metastable species, énergie UV inputs, and soft X-ray inputs. Each element is capable of producing a pulse of 5 χ 107 elec trons for each detected input electron, ion, or photon. Model 5205X detects inputs located anywhere within a 0.18-inch-square area, but the output charge pulses are also imaged in exact positional correspondence with the input event. Bendix Research Labora tories, Bendix Center, Southfield, Mich. 48075 436
M o d e l 3 5 0 0 regulator is d e s i g n e d for gas c h r o m a t o g r a p h y s y s t e m s . E x t r e m e l y stable, stainless steel w i t h m i n i m a l l e a k a g e (less than 2 x 1 0 -10 c c . / s e c . of h e l i u m or less than 1 c u . in. in 2 6 0 0 years). *lf y o u already have the c o m p l e t e Matheson General Catalog No. 27. just turn to the " e q u i p m e n t ' section. (All the Matheson Equipment is listed there ) If not. send for Matheson's 60 page " E q u i p m e n t for Gas Systems catalog.
USE COUPON TO SEND FOR OUR NEW EQUIPMENT CATALOG EGS NO. 1
Auto-Attenuator
An auto-attenuator which provides attenuation rates as fast as 50 msec per step also provides maximum resolution readout through a dynamic 12-step range from 1 to 2048 times the re corder's basic calibration. Reliable solid-state digital logic circuitry auto matically selects the optimum span for any high-impedance strip chart re corder. An on-the-chart record of at tenuation changes can be ordered to show exactly what has happened. Prices start at $550. Esterline Angus, P.O. Box 24000, Indianapolis, Ind. 46224. (317) 632-6501 437
Radiation Detectors A new line of ultra high-intensity solid-state radiation detectors for the measurement of a variety of radiation species including electrons, gammarays, neutrons, and X-rays, as well as heavier charged particles, has been in troduced. The silicon diffused junction detectors are available in either P-I-N or lithium-ion-drifted configurations and have a typical sensitivity in the measurement of gamma or neutron transients to intensities as great as 10 18 MeV/cm 2 sec with 5 nanosecond resolu tion form accelerator, pulsed reactor, or nuclear weapon events. The detectors can be operated in a current mode rather than a counting mode for mea suring high-intensity radiation tran sients. Nuclear Semiconductor, Inc., 537 Old County Rd., San Carlos, Calif. 94070 438
MATHESON GAS PRODUCTS P. O. Box S5. E a s l R u l h e r f o r d .
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A D i v i s i o n o f W i l l R o s s Inc. East R u t h e r f o r d , N. J . ; C u c a m o n g a , Calif.; G l o u c e s t e r , M a s s . ; JoMet, 111.; L a P o r t e , T e x a s ; M o r r o w , Ga.; N e w a r k . Calif.; M a t h e s o n of C a n a d a , L t d . , W h i t b y , O n t . Circle No. 80 on Rearers' Service Card
ANALYTICAL CHEMISTRY, VOL. 4 1 , NO. 14, DECEMBER 1969
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